Fourth case of tegumentary leishmaniasis in Brazil by Leishmania major ‒ is it possible for new species to be introduced in Brazil through immigration?

egumentary leishmaniasis (TL) in Brazil is the New World egumentary leishmaniasis (NWTL), with distinct protozoan pecies, vectors, reservoirs and presentation when comared to the Old World tegumentary leishmaniasis (OWTL), hich occurs in European, African and Middle Eastern counries. The authors report the fourth case of TL in Brazil aused by an Old World species, which is not native to Latin merica, and discuss the introduction of this species in the ountry.

kinetoplast minicircle DNA (kDNA or mitochondrial DNA) of Leishmania spp. This genetic target was chosen due to the presence of multiple copies per cell and due to the size of the DNA fragment amplified from the employed primers (kDNA-F, forward: 5'-GTGGGGGAGGGGCGTTCT-3' and kDNA-R, reverse: 5'-ATTTTACACCAACCCCCAGTT-3'), 2---4 allowing greater sensitivity for parasite detection in the type of analyzed sample. PCR resulted in the specific amplification of a fragment with an approximate size of 116---120 base pairs (Fig. 3) and DNA sequencing allowed the molecular identification of the Leishmania major species complex (Fig. 4), confirming the presence of the non-native agent in the country. Unfortunately, the patient moved and did not return in person, but only via telemedicine, with spontaneous resolution.

Discussion
In the Middle East, the most often reported etiological agents are L. tropica and L. major, transmitted by mosquitoes of the genus Phlebotomus. 5 L. major, however, does not have a reservoir, being considered an anthroponosis. In Brazil, the most prevalent species are L. braziliensis, L. amazonensis and L. guyanensis, transmitted by mosquitoes of the genus Lutzomyia. As for the clinical picture, unlike the classic ulcer with a granulomatous bottom, OWTL is characterized by multiple erythematous papules at the sites of the insect bites, which develop into nodules < 2 cm, ulcerate, and form a crust (''dry ulcers''). 5 The Montenegro test has a high sensitivity for the detection of a prior L. major infection. 6 In 1991 the cases decreased in Syria, where this disease is endemic, due to the fight against mosquitoes. However, in the late 1990s, an increase was observed, which was attributed to intense rural-urban migration and the deterioration of services, such as garbage collection and basic sanitation. 7 As of 2011, there have been no more epidemiological data, due to the start of the civil war, which culminated in the destruction of 57% of the public hospitals. 7 The collapse of health services and mass migration to neighboring countries ensued. Thus, the re-emergence of diseases such as polio, measles, and tuberculosis was observed, in addition to TL, in response to the increase in vectors and the healthcare chaos.
The refugees were settled in border towns, mainly in Turkey, without medical care and living in an environment favorable for the spreading of epidemics. New cases of TL were observed in refugee camps. In Lebanon, there was an  increase from six cases between 2000---2012 to 1,033 cases in 2013 alone, 97% of which were Syrian refugees. 8 In Brazil, Syrians constitute the predominant group of refugees. 9 There are situations of vulnerability, political, socioeco- endemic strains have been detected, even in a patient with no history of travelling, suggesting the introduction of this species. 10 In the Mediterranean, the competence of the mosquito Anopheles sergentii as a vector was verified, 11 raising the hypothesis of the feasibility of introducing this disease into other European countries. In Brazil, where PCR is not a routinely performed test, there are potential vectors for L. major 12,13 and isolated cases of L. major-like strains, possibly L. major, 14 have been described in the Midwest in the 1970s and 1980s, in patients with no history of travelling. 15 However, there is lack of information to evaluate the capacity for autochthonous transmission.

Conclusion
The authors emphasize the importance of this diagnosis in patients from endemic areas, considering the potential for deformities. Moreover, they emphasize the relevance of this report for the epidemiological investigation of the possibility of autochthonous transmission of Old World species in our country.

Financial support
None declared.

Authors' contributions
Cindy Tiemi Matsumoto: Data collection, or analysis and interpretation of data; writing of the manuscript or critical review of important intellectual content; intellectual participation in the propaedeutic and/or therapeutic conduct of the studied cases; critical review of the literature; approval of the final version of the manuscript.
Milvia Maria Simões and Silva Enokihara: Intellectual participation in the propaedeutic and/or therapeutic conduct of the studied cases; critical review of the literature.
Marília Marufuji Ogawa: Data collection, or analysis and interpretation of data; effective participation in research orientation; intellectual participation in the propaedeutic and/or therapeutic conduct of the studied cases; critical review of the literature; approval of the final version of the manuscript.
Samira Yarak: Data collection, or analysis and interpretation of data; writing of the manuscript or critical review of important intellectual content; effective participation in research orientation; intellectual participation in the propaedeutic and/or therapeutic conduct of the studied cases; critical review of the literature; approval of the final version of the manuscript.

Conflicts of interest
None declared.